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Title:
COMBUSTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/005350
Kind Code:
A1
Abstract:
In accordance with the flow distribution of combustion gas including an unburned portion, an after-air port (AAP) arranged downstream of the two-stage combustion burner can effectively reduce the unburned portion by dividing as appropriate so as to avoid interaction, and by mixing together, two types of after-air having functions of linearity and spreading. As the configuration of this AAP (7), a primary nozzle (5) for supplying primary after-air (1) and having a vertical height greater than the horizontal width is provided in the center in the opening (17) of the AAP (7), a secondary nozzle (14) for supplying secondary after-air (11) is provided in the opening (17) outside of the primary nozzle (5), and one or more secondary after-air guide vanes (15) having a fixed or variable tilt angle relative to the after-air port center axis (C0) are provided at the outlet of the said secondary nozzle (14) to deflect and supply the secondary after-air (11) horizontally to the left or right.

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Inventors:
KIYAMA KENJI (JP)
SHIMOGORI MIKI (JP)
MINE TOSHIHIKO (JP)
TADAKUMA SATOSHI (JP)
OCHI KENICHI (JP)
KURAMASHI KOJI (JP)
OCHI YUSUKE (JP)
BABA AKIRA (JP)
KONDO YUKI (JP)
Application Number:
PCT/JP2014/068201
Publication Date:
January 15, 2015
Filing Date:
July 08, 2014
Export Citation:
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Assignee:
BABCOCK HITACHI KK (JP)
International Classes:
F23L9/02; F23C6/04
Domestic Patent References:
WO2007105335A12007-09-20
Foreign References:
JPH09112816A1997-05-02
JP2005134102A2005-05-26
JP2001182922A2001-07-06
JP2007192452A2007-08-02
JPH0528278B21993-04-23
JPS58224205A1983-12-26
JP2001355832A2001-12-26
US20120174837A12012-07-12
JP2717959B21998-02-25
Other References:
See also references of EP 3021046A4
Attorney, Agent or Firm:
KAMEI, Takeyuki et al. (JP)
Takayuki Kamei (JP)
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